Pump for exhausting air and gases



' n. A.'FLEUSS. PUMP FOR EXHAUSTING AIR AND GASES.

Patented June 21, 1921.

2 SHEETS-SHEET I.

' APPLICATION FILED 1An.4,1919.

v H. A. FLEUSS. PUMP FOR EXHAUSTIN Q AIR AND GASES. APPLICATION FILED IANJQ- I9l9.

Patented June 21, 1921.

2 $HEETS-SHEET 2.

" UNITED STATES J HENRY ALBERT FLEUSS, OF THATCHAM, ENGLAND, ASSIGNOR TO THE'PULSOMETER ENGINEERING COMPANY, LIMITED, OI BZEIADING,' l lhl'G'LAlfl'D.

rtnur ron iixrransrme AIR :ANDGASES. I

. Specificationof Letterslatnt: P t nted 1 921 192 Application and January 4, 1.919 :SeriaLNoL 269,693.

(GRANTED UNDER THE rnovrsrons or THE may Mason a, 193i, 4; srar; I, 1313.

To all whom it may concern:

Be it known that I, HENRY ALBERT FLEUss, a subject of the King of Great Britain, residing'at Dunstan Lodge, Thatcham, Berks, England, have invented new and useful Improvements in Pumps for Exhausting Air and Gases for which I have filed an application in Great Britain dated June 5, 1917, of which the following is a specification.

This invention relates to improvements in pumps for exhausting air and gasesot'the cylinder and piston type in which thecylinder cover forms the pump valve, or'in which a fixed cover has a central valve, and: the top of the piston is conedand corresponds in shape to the under surface of the pump valve, or the top of the piston is in the'torm of a double cone corresponding inshape to the cylinder cover and its valve, and inwhich the oil is forcedinto the cylinder-by'aram or the like. a According to this invention the piston is operated by a piston rod which passes I piston Z). coned at b}. and corresponding in through a stufiing box in the pump-valve and has upon it, above the cylinder cover, a slide for actuating a ram for. supplying oil to the cylinder close to thezunder side of the pump valve. The slide andmechanism for actuating the ram together with the top of thecylinderare surrounded by a casing from which the air is exhausted by another pump.

Theram for pumpingtheoil worksin a T sreciprodites, GDgdgBSJVlth. one arm 7' of a bell-crank lever pivoted at, f the other arm cylinder having ports leading into another cylinder. surrounding the first and. 'contain-- .ingoil', the ports being opened and closed by the ram. Attachedto theram is a: stem 1 which may be in two parts abutting one al.1-

other endwise, and whichhas asp-ring tending tohold the ramin such a position that the :ports are open. The ram is reciprocated -in the cylinder by means of a xbellcrafik. lever which engages with the stem and is actuated by the slide on the piston rod, the partsbeing so adjusted that the oil is pumped into the cylinder as the piston nears the pump valve. In the passage betweenthe ram cylinder and the pumpcylinder is a non- 5 @return valve, and the oil passes into the pump cylinderthrough a another valve controlled by a springwhich ispowerful enough to hold it upon its seat if the vacuum in the apparatus is broken. "The oil cylinder is fitted "with filling and levelling plugs.

A slot may be made in the Wall of the pump. cyl nder-extending from one of the air Inletuor suction portstothe blind end a' pocket of air or oil; or-the piston may be provided With'an automatic'valve to allow of the passage of air through it.-

" The piston rod may pass out of the casing of the cylinder to prevent the formation of through :a stuffingbox, or it maybe reciprocated from a revolving shaft by means of a connecting rod, which shaft passes through packlng in the walls of the casing.

Theannexed drawings show a pum made:

in accordance withthis invention. igure 1 ;is a section and Fig- 2 is an elevationQ F g. 3 shows details of a valve through which o1l is fed into the pumpcylinder.

a is the pump cylinder in which works a shape *to the. under surface of the pump valve 0. A. piston rod 6 connected to the piston' o passes through a stuffing box 0 in the pump valve" cxand extends outside the casing through a 'stufling box 03. The travel f of which depresses thestem g of a ram a reciprocating in a. cylinder 9 Onthe ste n g. is a spring g? which constantly tends to raise the ra n g in the cylinder gtandw.

so open the portsg inth e walls of the .cylinder g The stem g andthe cylinder g are contained in. another cylinder 71. which is supplied with oil through. a plug k At the top of the cylinder h. is, another plug It which is opened when the cylinder is filled in; order to let it be ascertained when the level ofithe oil. reaches the plug hole. f;A passage j leads from the bottomofthe cylinder g ito the top of the pump cylinder in proximity to the valve and in this passage is a non-return valve 70. The oil passes from the passage j into the cylinder a through a yalve Z (see Fig. 3), controlled by asp'ringl Which is powerful enough to hold it upon its seat it the vacuum in the apparatus is the Cylinder to one of the inlet ports at. The piston rod b slide and. both arms f and .7

7 of the bell *crank lever are allcontained Within a casing 0 from Which the air is exhausted. p is arpipe leading to the inlet j ports n and g is another pipe leading to a second'pump by which the air is exhausted.

In operation, asthe ipiston, i) reoiprocates in the cylinder a the slide; 56' comes into contact withthef :arni f of the bell crank lever outlet valve of the cylinder, the top of the piston being shaped to correspond with the underside of' the cylinder cover, an inlet port in the cylinder, a rain for supplying oil to the cylinder, means for actuating the ra1n, -and aninletfor .oil to the cylinder locatedbetween the top of the piston and the cylinder cover after'the inlet port has been covered by the piston.

--'*the cylinder, a cylinder cover forining an outlet valve of the cylinder, the top of the piston being shapedto correspond with they underside'of the cylinder cover, an inlet the cylinder, a cylinder cover forming" an 5. In combination a cylinder, a piston in I SO 7 port in'thecylinder, a rain for sup'plyingoil to the cylinder, means for actuating the 1 rain, a casing-'inolosing the rain and the rain actuating mechanism, "means; for exhausting a1r llJOlIl theicasing, and aninlet w i h turns upon its pivot ffland the other for oil to the cylinder located-between the V army depresses the stem,.g of thei'rain g forcing oil through then-passage, jgancl past ,the valves Jc-and Z into the pump @cylinder a,- tl1'e;parts beingwso' adjusted that the oil i -is pumped into the cylinder 6; ass-the V-pis' ton bnears the valvewc, and after the inlet ports 12 "havebeen covered by sthepiston. l ,he oil that-passes out of the cylinder passes oyerqthe lowersurface of the casing 0 before a 'ain reaching the ram 9 1':

i :Whati ClitlnliSkl1. lnpcombination a cylinder, anpiston in the cylinder, ai ycylinderecever forming an "outlet valveotthe'cylinder, the topot the [piston being shaped to correspond with the underside of the cylinderc cover, an .inlet port in thegcylinder, a ram r01 Supplying .goilto-thecylinder, means for actuating the .ram, a casingiinclosing the rani'and the ram actuating mechanism. and means for exhaustiiw air. from thecasin 1 2. Inconibination a=cylnder, a pistonin the cylinder, a cylinder cover forming an outletvalve Of'theCYliHClQI, the top otthe piston being shaped to correspond with the underside of the cylinder cov'c ry an inlet port in the cylinder, aframior sup-plying oil to" the cylinder-,fineans for actuating the rain, jand aspring controlled valy e close to -the undersldeofthecyhndercover through whicholhenters the cylinder.

' 3x111 coinbinatioir a cylinder, a piston in *the cylinder, a "Cylinder cover forming an outlet valve'of the eyli'nden the' topof the piston 'being'sha'ped to correspond with the 'funder'side o' t the cylinder cover, an inlet port in thecylinder, a ram tor -supplying oil to the cylinderprne'ansfor actuating the ram,

ac'asing inelosing therain'and the ram actuating mechanism, rneans for exhausting air from the casingand a spring controlled 'val-vecloseto the undersideof: the cylinder cover through whichoil "enters the; cylinder.

4gln coinbination acylinde'r, a piston in top otthepiston and thecylinder cover after 7 the inlet port has-beencovered by the-pistongh v. '5 V 6. In-combination aicylinder, a .piston' in thercylinden a cylinder cover forming. an 'outlet va'lve or the cylinder, the top of-the piston being shaped {to correspond With' the u'nderside'ot the cylinder cover, an inlet port in the cylinder, a ram for. supplying oil to the cylinder, means for actuating theram, a casing inclosing the rainland the rain actuating mechanism and through" which the oilw-passes from thecylindertothe ram, and means for exhausting air from .the casing.

-' 7 lnfconibinationia cylinder, apiston in y the cylinder, acylinder cover forming an outlet valveof the cylinder, the topot the piston being shaped to correspond with the underside of hllQ'"0yl111ClB1 cover, an 1nlet port in the cylinder, a rain forflsupplying oil to the cylinder, means. for actuating "the rain, a casing inclosin'g the rain and the ram actuating mechanism land through which the oil passes timing the :cylinder -Vto *the ram, means. for exhaustingair from the casing, and a spring, controlled i-yalve close to f the underside of the cylinder cover through which; oil-enters-the cylinder.

.8; Incombinationa cylinder, apiston in -the cylinder,'za cylinder cover .forniing: an o outlet valve ofithe cylinder, the top. Zof the piston being shaped to correspond with the in the cylindenaram tor supplying oil to undersideot the cylinder cover, an inlet port;

' the cylinder, means for Z actuating :the ram, 7

a casing inclosing the ram and thenrain ace Ltuating mechanism and'through which the 'oil passes from the cylinder to the rain, "'means for exhausting 'air from the casing,

betvveenthe. top ot the pistonand: the cylindercover afterthje inletport has beena-covand an inlet for oil to, the cylinder located I the cylinder, a cylinder cover forming an outlet valve of the cylinder the top of the piston being shaped to correspond with the underside of the cylinder cover, an inlet port in the cylinder, a ram for supplying oil to the cylinder, a casing inclosing the rain, a slide on the piston red, A bell cranklever actuated by the slide for actuating the ram, and means for exhausting air from the caslng.

In testimony that I claim the foregoing as my invention I have signed my name this sixth day of December, 1918.

HENRYALBERT FLEUSS. 

